Gourt > Health > Conditions and Diseases > Eye Disorders > Cataract
In ophthalmology, a cataract is any opacity which develops in the crystalline lens of the eye or in its envelope. The name derives from the Latin cataracta meaning "waterfall" and the Greek kataraktes and katarrhaktes, from katarassein meaning "to dash down" (kata-, "down"; arassein, "to strike, dash") *. As rapidly running water turns white, the term was later used metaphorically to describe the similar appearance of mature ocular opacities.
Cataracts form for a variety of reasons, including long-term ultraviolet exposure, secondary effects of diseases such as diabetes, or simply due to advanced age; they are usually a result of denaturation of lens proteins. Genetic factors are often a cause of congenital cataracts and may also play a role in predisposing someone to cataracts. Fully half of all people between the ages of 65 and 74 and about 70% of those over 75 have some cataract formation. Cataracts may also be produced by eye injury or physical trauma. A study among Icelandair pilots showed commercial airline pilots as three times as likely to develop cataracts as people with non-flying jobs. This is thought to be caused by radiation coming from outer space.
Cataracts may be partial or complete, stationary or progressive, hard or soft.
More on [ Cataract ]
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kei_cataract (æ»æ²¢ å) Tue, 15 Dec 2009 15:58:25 -0000
twitterって救急車とかの情報交換が目的だったんだっけ？ちがったか？RT @kei_cataract: 【求血液】【RT支援】AB型Rh-をお持ちの方は、横浜市大病院0452615656まで。2009年12月14日の夕方に横浜の小学三年生の男の子が交通事故に会ったとのこと
Cataract Outsourcing presents: First-Year Enrollment in U.S. Medical Schools Up 2% http://bit.ly/4w1WNw
jlinkows (jlinkows) Tue, 15 Dec 2009 15:53:26 -0000
Cataract Outsourcing presents: First-Year Enrollment in U.S. Medical Schools Up 2% http://bit.ly/4w1WNw
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tsudan (M TSUDA) Tue, 15 Dec 2009 15:48:03 -0000
本当に覗くくらいでいいんですか？RT @kei_cataract: RT @kenpo_shibuya: 【告知】インターン生募集！ １～３月、ちょっとのぞくくらいでも結構ですから、ご自分のペースで参加してみませんか？ 詳しくは→ http://bit.ly/40t1V
My mother is having a cataract removed. Any advice ? Thanks Jim
n00105 (James) Tue, 15 Dec 2009 15:35:23 -0000
My mother is having a cataract removed. Any advice ? Thanks Jim
Cataract surgery not risky for older patients ⦠http://bit.ly/4Oebn3
twitterbo (Bo) Tue, 15 Dec 2009 15:30:29 -0000
Cataract surgery not risky for older patients … http://bit.ly/4Oebn3
@CALpumper I was born with a cataract, which was removed when I was two months old. What they're doing nowadays is really remarkable.
jeffmather (Jeff Mather) Tue, 15 Dec 2009 14:26:50 -0000
@CALpumper I was born with a cataract, which was removed when I was two months old. What they're doing nowadays is really remarkable.
Angeles Vision Clinic - What is a Cataract? - Brief overview. Includes symptoms, treatments, and photographs.
Meta Description: [ A cataract is a cloudy area in the lens of the eye. A normal lens is clear and focuses light into the back of the eye (see right photo). When a cataract develops some of this light is blocked out and or scattered. As this cataract develops, it becomes harder for a person to see. ]
Cataract Information A to Z - Information guide including causes, surgery information, illustrations and photographs.
Meta Description: [ Cataract and eye information for Tampa Bay, Florida ]
Cataract Information from Harvard Eye Associates - Information, including symptoms, cause, prevention, and treatment are reviewed along with details on surgery, including risks, activity restrictions, and expected visual outcome.
Meta Description: [ Harvard Eye Associates specializes in Cataract Surgery.. Eye Surgeon Doctor Orange County Laguna Hills San Clemente Irvine Newport Beach Huntington Beach ]
Cataract Surgery - Covers extracapsular extraction and phacoemulsification with diagrams and animation.
Meta Description: [ Complete and organized information, diagrams and animations about cataract surgery. Extracapsular - Phacoemulsification. ]
Cataract Surgery - Details about cataracts, the procedure, intraocular lens, and a section for eye care professionals. From Alcon Inc.
Meta Description: [ Information about cataract surgery for patients and eye care professionals ]
Cataracts - Cause of Cataract Vision Problems and Eye Sight Effects - Explains the causes, symptoms and treatment with diagrams.
Meta Description: [ BUPA health factsheet - cataracts develop over a period of months to years and your sight can gradually deteriorate without you noticing ]
Cataracts FYI - Brief information on treatment options.
Meta Description: [ Cataracts affect millions of individuals each year, but many patients still do not know what they are. Cataracts form when clumps of protein cloud the lens of the eye, blurring vision and at times causing permanent damage. Surgery is the preferred cure for cataracts. ]
eMedicine Health - Cataracts - Information on the causes, symptoms, and treatment of cataracts.
Meta Description: [ A cataract clouds the lens of the eye, limiting vision. Historically, cataracts were common among such ancient peoples as the Sumeri, the Egyptians, and the Indù. The name cataract stems ... ]
Eye 2 Eye Opticians - Explains what cataracts are, what causes them, and what the treatments are. Includes images.
Meta Description: [ Cataracts Explained. What are Cataracts? What causes them, and what is the treatment? ]
Eye Care Source: Cataracts - Offers the types, symptoms, detection, treatment and prevention of a cataract.
Meta Description: [ A consumer guide to eye cataracts. ]
Eye Surgery - Cataract and Epiretinal Membrane - Personal experience and illustrations obtained during eye surgeries under local anestesia.
Meta Description: [ What a patient may see during cataract and epiretinal surgery under local anesthesis; illustrated ]
How Do Cataracts Affect Your Vision? - This simulation is designed to help patients and their caregivers better understand the possible progression of cataracts.
Meta Description: [ This Vision Simulator is designed to help you better understand how Cataracts progresses over time. ]
MedicineNet: Cataracts - Includes what they are, how they form, symptoms, diagnosis, implantation of IOL's, and prevention.
Meta Description: [ Medical information on eye disorders treatment and symptoms including cataracts, color blindness and eye allergy ]
National Eye Institute - Facts About Cataract - Describes symptoms, diagnosis, and treatments.
Pediatric Cataract Surgery - Short fact sheet on treatment of cataracts in children.
Meta Description: [ Pediatric Cataract Surgery Pediatric Oncall ]
VisionChannel - Cataracts - Symptoms, diagnosis, and treatment of this condition which causes a clouding of the eye and can cause a loss of vision if untreated.
Meta Description: [ A cataract is the clouding or opacity that develops in the eye?s lens. The crystalline lens is comprised primarily of protein and water. Normally, the protein is bonded in a way that allows light to pass through it. ]
| Guinness Record on cataract operations.06.09.2009-itn news Sri Lanka | |
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